Skip advert
Advertisement
Features

Ferrari Testarossa side strakes - Art of Speed

The Ferrari Testarossa's side strakes are a striking piece of automotive design, and they're more functional than you might imagine

Ferrari Testarossa side strakes

The Eighties. a decade of conspicuous consumption, padded shoulders, Elton John’s supersized specs and cheesecloth shirts. A decade that spawned a supercar so attuned to the era of excess that it starred alongside the rolled-up sleeves of Don Johnson’s jacket in TV’s Miami Vice and was considered visually extravagant enough to earn its slot in the Rocket Man’s garage.

Advertisement - Article continues below

The Ferrari Testarossa, launched in 1984, made its predecessor, the outrageously pretty Boxer, look almost prim. Italian styling house Pininfarina was responsible for both but the width and flattened surfaces of the Testarossa could hardly have contrasted more dramatically with the beautifully contained curves of the Boxer. The new ‘redhead’ was clearly dressed to impress and carried the automotive equivalent of padded shoulders. Even by the OTT standards of the time the move was controversial but, to a degree, it was born of necessity.

> Ferrari F8 Spider 2020 review - the thorn in a McLaren 720S Spider's side

The Boxer’s mid-mounted flat-12 engine had been cooled by a single radiator situated in the nose of the car. This it did more or less successfully. The front-to-rear plumbing, however, had the unfortunate habit of heating up the cabin and its occupants. To circumvent the problem, the Testarossa’s mid-mounted 4.9-litre flat-12 had twin radiators packaged in situ behind the cabin bulkhead. This required a rearward flaring of the bodywork to accommodate the angled radiators and two gaping vents to channel airflow onto them.

But in several of the markets where the Testarossa would be sold, gaping holes in cars were outlawed. Ferrari’s solution was to convert the large apertures into collections of much smaller ones by dressing the holes with long, flowing strakes that extended into the doors and tapered off to a point just shy of their front shutlines. As well as being the flagship Ferrari’s signature design feature (mirrored by the decorative slats running across the width of the tail), the strakes lent a little aero to the job of directing air onto the radiators. They also looked pretty cool in the door mirrors, where they were clearly visible. 

Nicknamed ‘cheese graters’, the Testarossa’s side strakes weren’t perhaps the purest styling detail ever to leave the pen of Pininfarina, but they were easy to copy. Soon the Pontiac Trans Am had them, as did a glut of Japanese sports cars. You could even buy stick-on versions over the counter. But then that was the copycat ’80s. The side strake trend may have died with rolled-up jacket sleeves, but the appeal of the Testarossa is still very much alive.

Skip advert
Advertisement

Recommended

People are angry about the Ferrari Luce’s interior, but that’s a good thing
Ferrari Luce
Opinion

People are angry about the Ferrari Luce’s interior, but that’s a good thing

The interior for Ferrari’s very first electric car has caused a stir, and Maranello shouldn’t be worried
12 Feb 2026
The Ferrari Luce has an interior designed by Apple’s Jony Ive – we take a look
Ferrari Luce interior
News

The Ferrari Luce has an interior designed by Apple’s Jony Ive – we take a look

We’ve seen the powertrain, now we head to San Francisco to get hands on with the bold new interior for Ferrari’s very first EV: the Luce
10 Feb 2026
Best Ferraris – Maranello’s masterpieces from Amalfi to Enzo
Best Ferraris
Best cars

Best Ferraris – Maranello’s masterpieces from Amalfi to Enzo

Ferrari is a brand with more than its fair share of illustrious highlights, so we’ve recapped some of the best Ferrari road cars we’ve driven
4 Feb 2026
Ferrari’s future: fewer EVs, more powerful V12s
Ferrari V12
News

Ferrari’s future: fewer EVs, more powerful V12s

Its very first electric car might be just around the corner, but Ferrari has promised further development of its combustion lineup as part of its five…
9 Oct 2025
Skip advert
Advertisement

Most Popular

Citroën C5 Aircross review – quirky, honest SUV offering Range Rover comfort on a budget
Citroën C5 Aircross
In-depth reviews

Citroën C5 Aircross review – quirky, honest SUV offering Range Rover comfort on a budget

When is a generic family crossover not the dullest thing on Earth? When it’s a comfy Citroën glazed in weirdness
9 Apr 2026
Honda Civic Type R (EK9, 1997-2000) review – 1990s JDM icon makes a Peugeot 205 GTI look agricultural
Honda Civic Type R EK9
Reviews

Honda Civic Type R (EK9, 1997-2000) review – 1990s JDM icon makes a Peugeot 205 GTI look agricultural

The EK9 was the beginning of the Civic Type R story, but Honda never officially sold it in the UK. Unicorn status on our shores is a given, then
13 Apr 2026
Aston Martin Vantage S review – does it offer enough to take on Porsche's 911 Turbo S
Aston Martin Vantage S front
Reviews

Aston Martin Vantage S review – does it offer enough to take on Porsche's 911 Turbo S

Tweaks to the chassis and aero, plus more power and attitude – in S form, one of our favourite Astons promises even bigger thrills
15 Apr 2026